Electrical Eng. · Question Bank

Electronics

384 questions · page 10 of 20. Answer in your head first, then check the solution.

📘 EE Mock Board Exam
#181
The value of collector load resistance in a transistor amplifier is _____ the output impedance of the transistor.
Aequal to
Bmore than
Cless than
Dnot related to
#182
What is the purpose of RC or transformer coupling?
Ato block ac
Bto separate bias of one stage from another
Cto increase thermal stability
Dto block dc
#183
The bandwidth of a single stage amplifier is _____ that of multistage amplifier.
Aequal to
Bless than
Cmore than
Dindependent
#184
_____ is the time taken by the electrons or holes to pass from the emitter to the collector.
Atransit time
Brecombination
Ctransient time
Dduty cycle
#185
To obtain good gain stability in a negative feedback amplifier, Aß is
Aequal to 1
Bvery much greater than 1
Cless than 1
Dzero
#186
The basic concept of the electric wave filter was originated by
ACampbell and Wagner
BNorton
CFoster
DBode and Darlington
#187
Which configuration has the lowest current gain?
Acommon-base
Bcommon-collector
Ccommon-emitter
Demitter follower
#188
What transistor configuration offers no phase reversal at the output?
Acommon-base
Bcommon-collector
Ccommon-emitter
DBoth A and B
#189
The number of stages that can be directly coupled is limited because
Achange in temperature can cause thermal instability
Bcircuit becomes heavy and costly
Cit becomes difficult to bias the circuit
Dcircuit's resistance becomes too large
#190
The input capacitor in an amplifier is called _____ capacitor.
Acoupling
Bstray
Cbypass
Delectrolytic
#191
AC load line has a/an ______ slope compared to that of dc load line.
Azero
Bsmaller
Cbigger
Dinfinite
#192
A multistage amplifier uses at least how many transistor?
A1
B3
C4
D2
#193
RC coupling is used for _____ amplification.
Avoltage
Bcurrent
Csignal
Dpower
#194
An ammeter's ideal resistance should be
Azero
Bunity
Cinfinite
Dthe same with the circuit's resistance
#195
_____ is the circuit that can increase the peak-to-peak voltage, current, and power of a signal?
Apower supply
Battenuator
Camplifier
Dfilter
#196
When a non-linear distortion in an amplifier is D without feedback, with negative voltage feedback it will be
AD/(1 + Aß)
B(1 + Aß)/D
CD x (1 + Aß)
DD x (1 - Aß)
#197
A tuned amplifier uses what load?
Aresistive
Bcapacitive
CLC tank
Dinductive
#198
The voltage gain over mid-frequency range in an RC coupled amplifier
Achanges instantly with frequency
Bis constant
Cis independent of the coupling
Dis maximum
#199
The input impedance of an amplifier _____ when negative voltage feedback is applied.
Adecreases
Bbecomes zero
Cincreases
Dis unchanged
#200
The input impedance of an amplifier _____ when negative current feedback is applied.
Aremains unchanged
Bdecreases
Cincreases
Dbecomes zero

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